The BlackFly is a seaplane and ultralight seaplanes can weigh more than 254. I think it complies on the empty weight rule.
It may not comply with the stall speed rule. But no answer was ever given for why no flights during the week.
The SureFly did "NotFly" either. :gig: It was scheduled to do a hover demo in the Tuesday Airshow. They wheeled it out and after several minutes of waiting the announcer said it was too windy (he said it was gusting to 17kts) so they couldn't fly. I didn't notice any wind. :ermm:
It had an experimental certificate. But I doubt that the 40 hours was flown off to allow a public flight at Airventure. Very disappointing to those that went to see a VTOL.